Railing-base.



H. W. PLEISTER.

RAILING BASE.

APPLICATION HLED DEC. 4. 1911.

1,287,426. Patented Dec.10, 1918.

m W .QviLQ UNITED STATES PATENT onnron.

HENRY W. PLEISTER, 0F WESTFIELD, NEW JERSEY, ASSIGNOR TO HENRY B. NEWHALL.

RAILING-BASE.

Application filed December 4, 1917,

To all whom it may concern:

Be it known that I, HENRY 'W. Pnnls'rnn, a citizen of the United States, residing at Vestfield, in the county of Union and State of New J ersey. have invented certain new and useful Improvements in Railing-Bases, of which the following is a specification, taken in connection with the accompanying drawing.

My invention relates to an improved rail ing base for attaching pipe structures of any kind to floors, walls, or ceilings built of brick, stone, terra cotta, concrete or other similar material.

My improved. railing base is more economical to install and makes a neater job than the railing bases now in use.

My invention further relates to certain details of construction which will be de scribed in the specification and pointed out in the claims. 7

In the accompanying drawing, I have shown different uses to which my railing base may be put, but it is of course to be understood that my invention is not to be confined to these particular uses, which are simply shown by way of example.

In these drawings. the same referencenumerals refer to similar parts.

Figure 1 is a perspective view of my railing base used in connection with a railing.

Fig. 2 is a perspective view of my railing base shown ready to be assembled.

Fig. 3 is a perspective view of my railing base assembled and ready to cooperate with and hold any form of pipe structure.

Fig. 4 is a side elevation of another use to which the railing base may be put.

In the illustrative embodiment of my in vention 1 is an expansion bolt having radiallv movable members 2 and 3 and inwardly movable cones 4: and 5. The cone 4 is screwthreaded to cooperate with the screw thread upon the bolt 6. The cone 5 is unthreaded. In this form of bolt anchor I preferably provide the cones 4 and 5 with arrow heads 7 7 which cooperate with inclined surfaces 8, 8 on the members 2 and 3. I also use split spring bands 21, 21 to hold the members together.

To position my railing base it is merely necessary to drill one hole 9 in the support 10 of masonry or similar material, Fig. 3. and then place the expansion bolt 1 within this hole. The recessed cap 11 is then brought into proper position and the bolt 6 Specification of Letters Patent.

Patented Dec. 10, 1918.

Serial No. 205,305.

' passed through the collar 12, which is preferably a cone, and then through the cap 11 into the expansion bolt. 1, until its screw threads cotiperate with the screw threads of the cone 4:.

The collar 12 insures that the head 13 of the bolt will always lie beyond the plane of the lip 14 of the cap 11. This insures that a monkey wrench or similar tool can at any position of the parts always engage the head 13 of the bolt to expand the bolt anchor 1. It also protects the screw threads 15 on the interior of the cap 11 from becoming marred by the monkey wrench. or other tool used to expand the bolt anchor 1. By rotating the head 13 a powerful grip is obtained in the support 10. The stanchion 16. or other pipe structure, can then be screwed into the cap 11 which pipe will conceal both the head 13 of the bolt, as well as the collar 12, making a strong, permanent fastening and one which is most pleasing to the eye.

It is of course obvious that my railing base may be used for other purposes. I have shown for example in Fig. 4 one of my railing bases supporting a pipe 17 from which a sign 18 is hung. In this construction I may or may not use a guy wire 19 to support the end of the pipe 17.

My railing base is adapted for particularly heavy work and may be used to support pipe hangers. hitching posts, hand rails, lamp posts, standards for marble partitions, racks, shelving and the like. They are par ticularly economical to install in that only one expansion bolt need be used, whereas in the standard railing bases now in use three or four bolts have to be used through the flange of the railing base, requiring three or four holes to be drilled in the wall or support.

I also preferably provide my cap 11 with a cylindrical boss 20 to fit into the hole 9 to prevent side motion and to add rigidity to the fastening.

While I have shown one form of expansion bolt it is to be understood that any suitable form of expansion bolt may be used.

Having thus described this invention in connection with an illustrative embodiment thereof, to the details of which I do not desire to be limited, what is claimed as new and what is desired to secure by Letters Patent is set forth in the appended claims.

1. The combination in a railing base of an expansion bolt, a recessed cap, a bolt passing through the cap adapted to expand the expansion bolt, and means to insure that the head of the bolt will always extend out of the recessed portion of the cap in a position to be engaged by a monkey wrench or similar tool.

2. The combination in a railing base of an expansion bolt, a recessed screw threaded cap provided with a lip, a bolt, means to insure that the head of the bolt extends past the lip of the recessed cap, and a pipe adapted to screw into the railing base and conceal the head of the bolt.

3. The combination in a railing base of an expansion bolt, a recessed screwthreaded cap provided with a lip, provided With a cylindrical projection to fit into the hole in the support, a bolt, means to insure that the head of the bolt extends past the lip of the recessed cap, and a pipe adapted to screw into the railing base and conceal the head of the bolt. 7

4c. The combination in a railing base of an expansion bolt, a recessed screwthreaded cap provided with a lip, a bolt, a collar mounted on the bolt to insure that the head of the bolt extends past the lip of the recessed cap.

5. The combination in a railing base of an expansion bolt, a recessed screwthreaded cap provided with a lip, a bolt, a collar mounted on the bolt to insure that the head of the bolt extends past the lip of the recessed cap, and a pipe adapted to screw into the railing base and conceal the head of the bolt, and the collar.

HENRY W. PLEISTER. WVitnesses MARY R. RYAN,

ELIZABETH J. ROTH.

Copies of this patent may be obtained.- for five cents each, by addressing the Gomxm'ssionerv of Patents.

- Washington, D. 0. 

